Alert archive / Florida / Tornado Watches in 2023

Tornado Watch 184

April 30, 202341 counties in Florida

The Storm Prediction Center issued this tornado watch at Apr 30, 2023, 5:03 AM EDT for 41 counties in Florida. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Apr 30, 2023, 5:03 AM EDT (09:03 UTC)
Expired: Apr 30, 2023, 12:20 PM EDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 41 counties

Alachua County, FL, Bradford County, FL, Brevard County, FL, Broward County, FL, Charlotte County, FL, Citrus County, FL, Clay County, FL, Collier County, FL, DeSoto County, FL, Duval County, FL, Flagler County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Indian River County, FL, Lake County, FL, Lee County, FL, Levy County, FL, Manatee County, FL, Marion County, FL, Martin County, FL, Miami-Dade County, FL, Monroe County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Palm Beach County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Putnam County, FL, Saint Johns County, FL, Saint Lucie County, FL, Sarasota County, FL, Seminole County, FL, Sumter County, FL, Union County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 57 km from the middle of the area, began a volume at 09:07 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 50%
One or more EF2 to EF5 tornadoes: 10%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 20%
One or more hailstones of 2 inches or more: 10%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

30 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Apr 30, 5:18 AM EDT	Severe Thunderstorm Warning	JAX	Putnam	27 min
Apr 30, 5:24 AM EDT	Severe Thunderstorm Warning	TBW	Charlotte, DeSoto, Hardee, Lee, Sarasota	51 min
Apr 30, 5:31 AM EDT	Tornado Warning	TBW	Charlotte, Lee	14 min
Apr 30, 5:44 AM EDT	Tornado Warning	TBW	Charlotte	16 min
Apr 30, 6:15 AM EDT	Severe Thunderstorm Warning	TBW	Charlotte, DeSoto, Lee, Sarasota	30 min
Apr 30, 6:21 AM EDT	Severe Thunderstorm Warning	MLB	Orange, Osceola	39 min
Apr 30, 6:34 AM EDT	Tornado Warning	TBW	Charlotte	11 min
Apr 30, 6:37 AM EDT	Tornado Warning	MFL	Glades	23 min
Apr 30, 6:46 AM EDT	Tornado Warning	TBW	Highlands	14 min
Apr 30, 6:58 AM EDT	Tornado Warning	TBW	Highlands	17 min
Apr 30, 7:00 AM EDT	Tornado Warning	MFL	Glades	15 min
Apr 30, 7:03 AM EDT	Severe Thunderstorm Warning	TBW	Lee	27 min
Apr 30, 7:07 AM EDT	Severe Thunderstorm Warning	MLB	Seminole, Volusia	38 min
Apr 30, 7:11 AM EDT	Severe Thunderstorm Warning	MLB	Brevard, Orange, Osceola, Volusia	49 min
Apr 30, 7:24 AM EDT	Severe Thunderstorm Warning	MLB	Brevard, Indian River, Martin, Okeechobee, Saint Lucie	51 min
Apr 30, 7:28 AM EDT	Tornado Warning	MFL	Glades	17 min
Apr 30, 7:31 AM EDT	Tornado Warning	MLB	Brevard	34 min
Apr 30, 7:41 AM EDT	Severe Thunderstorm Warning	MFL	Collier, Glades, Hendry	34 min
Apr 30, 7:58 AM EDT	Tornado Warning	MLB	Martin, Saint Lucie	32 min
Apr 30, 8:06 AM EDT	Severe Thunderstorm Warning	MFL	Broward, Collier, Glades, Hendry, Palm Beach	24 min
Apr 30, 8:09 AM EDT	Tornado Warning	MLB	Indian River, Saint Lucie	36 min
Apr 30, 8:12 AM EDT	Tornado Warning	MFL	Collier, Hendry	17 min
Apr 30, 8:22 AM EDT	Tornado Warning	MLB	Martin, Saint Lucie	38 min
Apr 30, 8:31 AM EDT	Severe Thunderstorm Warning	MFL	Hendry, Palm Beach	44 min
Apr 30, 9:11 AM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	49 min
Apr 30, 9:13 AM EDT	Tornado Warning	MLB	Martin	17 min
Apr 30, 9:19 AM EDT	Tornado Warning	MFL	Palm Beach	26 min
Apr 30, 9:31 AM EDT	Tornado Warning	MFL	Palm Beach	28 min
Apr 30, 10:19 AM EDT	Severe Thunderstorm Warning	MFL	Broward	26 min
Apr 30, 10:33 AM EDT	Severe Thunderstorm Warning	MFL	Broward	5 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 00:00Z, 9.1 hours before the alert went out and 86 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 182 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 909 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 212 m²/s²
0-3 km storm-relative helicity: 253 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 2:54 AM EDT	Mesoscale Discussion	SPC	Alachua, Columbia, Dixie, Gilchrist, Hamilton, Jefferson and 8 more	2 hr
Apr 30, 4:32 AM EDT	Mesoscale Discussion	SPC	Alachua, Brevard, Broward, Charlotte, Citrus, Collier and 29 more	118 min
Apr 30, 7:16 AM EDT	Mesoscale Discussion	SPC	Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 17 more	89 min
Apr 30, 9:55 AM EDT	Mesoscale Discussion	SPC	Broward, Miami-Dade, Monroe	2 hr

Nearby

Tornado Watches in Florida, 2023 Every tornado watch in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.